---
product_id: 426944692
title: "ARCTIC S4028-15K - 40x40x28 mm Server Fan, 1400–15000 RPM, PWM Regulated, 4-p..."
brand: "arctic"
price: "$41"
currency: NZD
in_stock: null
reviews_count: 10
category: "Arctic"
url: https://www.desertcart.nz/products/426944692-arctic-s4028-15k-40x40x28-mm-server-fan-1400-15000-rpm
store_origin: NZ
region: New Zealand
---

# 32.67 m³/h airflow PWM regulated 4-pin connector 15000 RPM max speed ARCTIC S4028-15K - 40x40x28 mm Server Fan, 1400–15000 RPM, PWM Regulated, 4-p...

**Brand:** arctic
**Price:** $41
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Small Fan, Big Chill: Power Your Server Like a Pro!

## Quick Answers

- **What is this?** ARCTIC S4028-15K - 40x40x28 mm Server Fan, 1400–15000 RPM, PWM Regulated, 4-p... by arctic
- **How much does it cost?** $41 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/426944692-arctic-s4028-15k-40x40x28-mm-server-fan-1400-15000-rpm)

## Best For

- arctic enthusiasts

## Why This Product

- Trusted arctic brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Yet Mighty:** 40x40x28 mm fits tight 1U server racks without compromise
- • **Dual Ball Bearings:** Engineered for durability and resistance to heat & dust
- • **Precision PWM Control:** Seamlessly adjust fan speed for silent efficiency or max airflow
- • **Unmatched Speed & Power:** Blazing 15000 RPM for ultimate server cooling performance
- • **Versatile Compatibility:** Plug & play with 4-pin, 3-pin, or 2-pin headers for all your devices

## Overview

The ARCTIC S4028-15K is a high-performance 40mm server fan featuring an impressive 15000 RPM max speed, PWM speed regulation via a 4-pin connector, and dual ball bearings for enhanced durability. Delivering up to 32.67 m³/h airflow and 26.5 mm/H2O static pressure, it excels in tight 1U rack environments and is compatible with a wide range of devices including servers, NAS, and mini PCs. Designed for professionals demanding reliable, quiet, and efficient cooling in compact spaces.

## Description

Buy ARCTIC S4028-15K - 40x40x28 mm Server Fan, 1400–15000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black: CPU Cooling Fans - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Five-Star Fans That I Removed From My System - I picked up one of the 6,000rpm variants of these fans to aim at the 12VHPWR connector on my RTX 5090—you know, just to be safe. I even 3D printed a little right-angle duct adapter to funnel air down over the connector itself. Ultimately, I ended up removing it from the system because I found the noise output unacceptable, even at very low operating speeds. ➤ The Challenge with 40mm Fans 40mm fans can be tricky with noise. Twenty to thirty years ago, 40x10mm was a common size on chipsets and video cards, and I've had quite a few fans in that form factor that were essentially inaudible when installed in a case. I've also had other 40mm fans—like these Arctics—that produce specific tones that pierce through just about anything you mount them to or in. In terms of quantitative noise levels, these are very quiet fans for what they are. I have some 40mm Sanyo Denkis on a 2.5" drive cage that are audible across the house even at 7,000-9,000rpm; these Arctics are nothing like that. Qualitatively, however, the noise these produce is specifically irritating to me. I can sit next to the server with those Sanyo Denkis screaming away and after a few minutes stop noticing them (arguably because after a few minutes I've gone deaf, but...). The single Arctic I had on the 5090, running at <2,000rpm, was obviously far quieter but also far more irritating in the way it was *just* audible over the rest of the system. Unfortunately, despite the flow straighteners, at <2,000rpm it didn't move a meaningful amount of air for my use case, meaning it was essentially added irritation for no reason. It's not that they're loud—it's that the specific tone they make, even in the context of what they are, is particularly grating to me. Your experience may, of course, differ. ➤ Use Case Matters For their intended use case (in a 1U server), these are extremely quiet and highly power efficient. For use in a desktop, however, they become meaningfully audible far before they move a meaningful amount of air. Unless you have a specific need for a 40mm fan, you would generally be better served finding an alternative way to accomplish whatever task you're considering these for. ➤ Bottom Line I can't and won't knock any stars off the fan itself—these earn the full five stars easily. They're power-efficient, quiet for what they are, dual ball bearing, exceptionally well-built, and Arctic provides actual performance data including P/Q curves and PWM curves. Both are generally absent with consumer-grade fans and are hugely useful if you know how to read them, signaling that Arctic is serious about selling these for actual industrial/server use. But for the home/enthusiast/desktop user, these are clearly audible well below 2,000rpm and essentially unacceptable over 3,000rpm. If you have a specific need for them, I'd recommend them. If you can accomplish your goal with a larger fan, you'd probably be happier going that route.
Review: Great fans - perfect for replacing in old equipment - I have bought multiple packs of the 6K and used them all over. Imo I would say the difference in noise between these and a Noctua is fairly neglible so don't believe those that say these are insanely loud. I may be biased because I am replacing MUCH louder fans in old server equipment so anything quieter is a blessing, however I have tested the Noctua and the 6K version side by side in a quiet computer room of mine and even being next to them on full blast these were barely audible. I hooked them up to a bench top power supply giving 12V DC so there was no confusion of if they were each on full blast or if the noise was being muddied by other fans. I think the Noctua is a better pick if you absolutely value complete silence above all and you intend to use these in a computer that you have tuned to full blast. Otherwise with PWM I would pick these 100% of the time - they're much cheaper AND they move MUCH more air than the Noctuas, which is another great benefit in old server components -- I need the airflow. Ultimately these are a great buy and I would definitely recommend them!

## Features

- TheS4028-15K's impeller is held in place by two ball bearings, making it both particularly durable and less sensitive to external influences like heat and dust
- The S4028-15K has a particularly wide speed range that can be regulated via PWM and voltage. With its 15000 max RPM it is one of the strongest 12 V fans with a 40 mm diameter
- With a static pressure of 26.5 mm/H2O and a maximum airflow of 32.67 m³/h, the S4028-15K is a true all-rounder and is suitable as both a radiator and case fan
- The S4028-15K fits in 1U server cases, as a replacement fan for routers, switches and NAS. It can also be used for other products such as DVRs, Mini PCs, HTPCs, hard disk enclosures and 3D printers
- The fan has a standard 4-pin fan connector and can also be connected and controlled on 2-pin or 3-pin headers, while the 40 cm cable allows enough flexibility in positioning

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09SB3Z6ND |
| Air Flow Capacity | 264 Cubic Feet Per Minute |
| Best Sellers Rank | #113 in Computer Case Fans |
| Brand | ARCTIC |
| Compatible Devices | Printer, Server |
| Cooling Method | Air |
| Customer Reviews | 4.5 4.5 out of 5 stars (130) |
| Date First Available | February 9, 2022 |
| Item Weight | 1.76 ounces |
| Item model number | ACFAN00264A |
| Manufacturer | ARCTIC |
| Material | Plastic |
| Maximum Rotational Speed | 15000 RPM |
| Noise Level | 35 Decibels |
| Number of Items | 1 |
| Power Connector Type | 2510 4-Pin Fan-Connector |
| Product Dimensions | 1.57"L x 1.1"W x 1.57"H |
| UPC | 840033401616 |
| Voltage | 12 Volts |

## Product Details

- **Air Flow Capacity:** 264 Cubic Feet Per Minute
- **Brand:** ARCTIC
- **Compatible Devices:** Printer, Server
- **Cooling Method:** Air
- **Material:** Plastic
- **Maximum Rotational Speed:** 15000 RPM
- **Noise Level:** 35 Decibels
- **Power Connector Type:** 2510 4-Pin Fan-Connector
- **Product Dimensions:** 1.57"L x 1.1"W x 1.57"H
- **Voltage:** 12 Volts

## Images

![ARCTIC S4028-15K - 40x40x28 mm Server Fan, 1400–15000 RPM, PWM Regulated, 4-p... - Image 1](https://m.media-amazon.com/images/I/51tHzOmapnL.jpg)

## Questions & Answers

**Q: are these silent or the standard howling?**
A: They aren’t silent but they are at least 90% quieter than the standard screamers. A point to note is that on the servers I've used these the cpu temps can be around 10-12c hotter than using the screamers so watch out for that. They move significantly less air.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Five-Star Fans That I Removed From My System
*by S***S on October 13, 2025*

I picked up one of the 6,000rpm variants of these fans to aim at the 12VHPWR connector on my RTX 5090—you know, just to be safe. I even 3D printed a little right-angle duct adapter to funnel air down over the connector itself. Ultimately, I ended up removing it from the system because I found the noise output unacceptable, even at very low operating speeds. ➤ The Challenge with 40mm Fans 40mm fans can be tricky with noise. Twenty to thirty years ago, 40x10mm was a common size on chipsets and video cards, and I've had quite a few fans in that form factor that were essentially inaudible when installed in a case. I've also had other 40mm fans—like these Arctics—that produce specific tones that pierce through just about anything you mount them to or in. In terms of quantitative noise levels, these are very quiet fans for what they are. I have some 40mm Sanyo Denkis on a 2.5" drive cage that are audible across the house even at 7,000-9,000rpm; these Arctics are nothing like that. Qualitatively, however, the noise these produce is specifically irritating to me. I can sit next to the server with those Sanyo Denkis screaming away and after a few minutes stop noticing them (arguably because after a few minutes I've gone deaf, but...). The single Arctic I had on the 5090, running at <2,000rpm, was obviously far quieter but also far more irritating in the way it was *just* audible over the rest of the system. Unfortunately, despite the flow straighteners, at <2,000rpm it didn't move a meaningful amount of air for my use case, meaning it was essentially added irritation for no reason. It's not that they're loud—it's that the specific tone they make, even in the context of what they are, is particularly grating to me. Your experience may, of course, differ. ➤ Use Case Matters For their intended use case (in a 1U server), these are extremely quiet and highly power efficient. For use in a desktop, however, they become meaningfully audible far before they move a meaningful amount of air. Unless you have a specific need for a 40mm fan, you would generally be better served finding an alternative way to accomplish whatever task you're considering these for. ➤ Bottom Line I can't and won't knock any stars off the fan itself—these earn the full five stars easily. They're power-efficient, quiet for what they are, dual ball bearing, exceptionally well-built, and Arctic provides actual performance data including P/Q curves and PWM curves. Both are generally absent with consumer-grade fans and are hugely useful if you know how to read them, signaling that Arctic is serious about selling these for actual industrial/server use. But for the home/enthusiast/desktop user, these are clearly audible well below 2,000rpm and essentially unacceptable over 3,000rpm. If you have a specific need for them, I'd recommend them. If you can accomplish your goal with a larger fan, you'd probably be happier going that route.

### ⭐⭐⭐⭐⭐ Great fans - perfect for replacing in old equipment
*by S***X on March 6, 2024*

I have bought multiple packs of the 6K and used them all over. Imo I would say the difference in noise between these and a Noctua is fairly neglible so don't believe those that say these are insanely loud. I may be biased because I am replacing MUCH louder fans in old server equipment so anything quieter is a blessing, however I have tested the Noctua and the 6K version side by side in a quiet computer room of mine and even being next to them on full blast these were barely audible. I hooked them up to a bench top power supply giving 12V DC so there was no confusion of if they were each on full blast or if the noise was being muddied by other fans. I think the Noctua is a better pick if you absolutely value complete silence above all and you intend to use these in a computer that you have tuned to full blast. Otherwise with PWM I would pick these 100% of the time - they're much cheaper AND they move MUCH more air than the Noctuas, which is another great benefit in old server components -- I need the airflow. Ultimately these are a great buy and I would definitely recommend them!

### ⭐⭐⭐⭐⭐ A bit loud, but performant
*by S***L on January 14, 2026*

These fans are a bit louder than I would have hoped for, but they're still quieter than what they replaced. I did some math before buying and determined that the 6K variant would not be enough for my use case on a Tesla P40. That was correct, as these fans have to be at 11-12K RPM to keep temperatures under control. Under a more moderate load, they can run at 9K or less to keep it cool. Overall, if you're trying to cool a 250W TDP or so GPU like a Tesla P40, these work fairly well for the price.

## Frequently Bought Together

- ARCTIC S4028-15K - 40x40x28 mm Server Fan, 1400–15000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black
- Noctua NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-28*